/Engine/Source/Runtime/GeometryFramework/Public/Components/DynamicMeshComponent.h
This function is passed via lambda to the RenderProxy to be able to access TriangleColorFunc
[FColor](API\Runtime\Core\Math\FColor) GetTriangleColor ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) * Mesh, int TriangleID )